table.summary {
  border-width: 1px;
  border-style: solid;
  border-color: #808080;
  border-spacing: 0;
}

th, td {
  border-width: 1px;
  border-style: solid;
  border-color: #808080;
  padding: 5px;
  border-spacing: 0;
  text-align: left;
}

td.right {
  background-color: #cfffcf;
}
td.wrong {
  background-color: #ffcfcf;
}
td.exceptions {
  background-color: #ffffcf;
}
td.ignored {
  background-color: #efefef;
}
td.sum {
  background-color: #c0c0c0;
}
